"use strict";
/**
 *
 * @param {string} bar
 * @return {string}
 */
function foo(bar) {
    return `hello， ${bar}`;
}
console.log(foo('ataola'));
console.log(foo('world'));
// Symbol
const sym1 = new Symbol('s1');
const sym2 = new Symbol('s2');
console.log(sym1 == sym2);
console.log(sym1 === sym2);
